PicC 9.50 dsPIC Manual.pdf

Library FunctionsISALNUM, ISALPHA, ISDIGIT, ISLOWER et. al.Synopsis#include int isalnum (char c)int isalpha (char c)int isascii (char c)int iscntrl (char c)int isdigit (char c)int islower (char c)int isprint (char c)int isgraph (char c)int ispunct (char c)int isspace (char c)int isupper (char c)int isxdigit(char c)DescriptionThese macros, defined in ctype.h, test the supplied character for membership in one of several overlappinggroups of characters. Note that all except isascii() are defined for c, if isascii(c) is true or ifc = EOF.isalnum(c)isalpha(c)isascii(c)iscntrl(c)isdigit(c)islower(c)isprint(c)isgraph(c)ispunct(c)isspace(c)isupper(c)isxdigit(c)c is in 0-9 or a-z or A-Zc is in A-Z or a-zc is a 7 bit ascii characterc is a control characterc is a decimal digitc is in a-zc is a printing charc is a non-space printable characterc is not alphanumericc is a space, tab or newlinec is in A-Zc is in 0-9 or a-f or A-F153